what is the value of this?

The value is .03.
In order to find the value of any term in scientific notation, use the exponent of the 10 as how many times you have to move the decimal place. Since we have a 2 here, we move it twice. Since the two is negative, we move it to the left (we would move it to the right if it was positive).
3 ---> Move once to the left ---> .3 ------> move again to the left ---> .03